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Vertical bar-embedded sleeve type prefabricated underground diaphragm wall for foundation trench

A technology for underground diaphragm walls and vertical steel bars, applied in sheet pile walls, foundation structure engineering, excavation, etc., can solve the problem that the insertion depth of a single wall cannot meet the design requirements, is limited, and generally does not exceed 13~18m, etc.

Active Publication Date: 2020-05-19
ZHEJIANG PROVINCE INST OF ARCHITECTURAL DESIGN & RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current prefabricated underground diaphragm wall is affected by factors such as traffic control and the radius of gyration of the site. The length of a single wall of the prefabricated underground diaphragm wall is often limited, generally not exceeding 13~18m; but the actual foundation pit project is due to the deep excavation depth. , the insertion depth of a single wall cannot meet the design requirements, so two or even more prefabricated underground continuous walls are often vertically connected to achieve the wall depth required by the design

Method used

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  • Vertical bar-embedded sleeve type prefabricated underground diaphragm wall for foundation trench
  • Vertical bar-embedded sleeve type prefabricated underground diaphragm wall for foundation trench
  • Vertical bar-embedded sleeve type prefabricated underground diaphragm wall for foundation trench

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Experimental program
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specific Embodiment 1

[0053] Specific embodiment one: as figure 1 , figure 2 , image 3 As shown, a kind of prefabricated underground diaphragm wall with vertical reinforcement pre-embedded sleeve type for foundation pit, including the lower prefabricated underground diaphragm wall 1, the upper prefabricated underground diaphragm wall 2, the front row of vertical connection components 3a, the rear row of vertical Connecting component 3b and horizontal seam sealing structure 4. The upper prefabricated underground diaphragm wall is supported on the top surface of the lower prefabricated underground diaphragm wall.

[0054] Such as figure 1 , figure 2 , image 3As shown, the lower prefabricated underground diaphragm wall 1 includes lower wall concrete 1.1, several lower wall vertical bars 1.2 pre-buried in the lower wall concrete and several lower wall horizontal distribution bars 1.3. The upper prefabricated underground diaphragm wall 2 includes the upper wall concrete 2.1, several upper wall...

specific Embodiment 2

[0072] Specific embodiment two, all the other structures of this embodiment refer to specific embodiment one, and its difference is:

[0073] Such as Figure 7 As shown, the grouting hole 5.3 extends obliquely outwards and upwards from the grouting port 5.1. In this embodiment, the high-strength grouting material is injected through the grouting hole, and the specific construction steps of filling the high-strength grouting material in the gap between the positioning sleeve and the lower pre-embedded connecting column include: first, filling several steel balls in the grouting hole ; Second, pour high-strength grouting material into the grouting hole, so that the high-strength grouting material and the steel ball in the grouting hole are filled into the inner cavity of the positioning sleeve together; the steel ball is used to fill the inner surface and the lower surface of the positioning sleeve The gap between the pre-embedded connecting columns and the gap between the inne...

specific Embodiment 3

[0077] Specific embodiment three, all the other structures of this embodiment refer to specific embodiment one, and its difference is:

[0078] Such as Figure 8 , Figure 9 As shown, a sleeve-type prefabricated underground continuous wall with vertical reinforcement pre-embedded for a foundation pit also includes a pre-installed grouting device 9 . The preset grouting device includes a vertical grout storage tank 9.1 preset on the top surface of the lower prefabricated underground diaphragm wall 1, a grouting block 9.2 matched with the vertical grouting tank, and a support set on the side of the grouting block 9.3. The vertical grout storage tank is filled with high-strength grouting material, the grout block is supported on the top surface of the lower prefabricated underground diaphragm wall through the support, and the lower end of the grout block extends into the vertical grout storage tank, the side of the grout block There is a gap between it and the side wall of the...

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Abstract

The invention discloses a vertical bar-embedded sleeve type prefabricated underground diaphragm wall for foundation trench in order to achieve the purposes that the vertical bar-embedded sleeve type prefabricated underground diaphragm wall is high in connecting strength, high in integrality, capable of meeting the requirements for the bending resistance and shear resistance of a wall body, high inleakproofness and capable of meeting the anti-seepage impermeable requirements. The vertical bar-embedded sleeve type prefabricated underground diaphragm wall comprises a lower prefabricated underground diaphragm wall body, an upper prefabricated underground diaphragm wall body, vertical connecting components and a horizontal joint sealing structure. The lower prefabricated underground diaphragmwall body comprises a plurality of lower wall vertical bars; the upper prefabricated underground diaphragm wall body comprises a plurality of upper wall vertical bars, the vertical connecting components are used for connecting the lower prefabricated underground diaphragm wall body with the upper prefabricated underground diaphragm wall body, the horizontal joint sealing structure comprises two anti-seepage slurry sealing rubber strips between the interface of the upper wall body and the interface of the lower wall body, a grouting cavity between the two anti-seepage slurry sealing rubber strips and a high-strength grouting material with which the grouting cavity is filled.

Description

technical field [0001] The invention relates to a prefabricated underground continuous wall for foundation pits, in particular to a sleeve-type prefabricated underground continuous wall with vertical steel bars pre-embedded for foundation pits. Background technique [0002] The underground diaphragm wall is often used as the retaining wall in the design and construction of foundation pit enclosure. The traditional cast-in-place underground diaphragm wall has many quality defects in the wall due to factors such as underwater concrete pouring, such as mud, sticky skin, and pockmarked surface. , exposed ribs, poor flatness, end voids or honeycombs and inaccurate positions of pre-components, etc. The prefabricated underground diaphragm wall process can better solve the above quality defects, and at the same time, the prefabricated underground diaphragm wall has the advantages of high strength, factory production, fast construction speed, green environmental protection, and savin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D5/20
CPCE02D5/20E02D17/04
Inventor 刘兴旺张金红李瑛李冰河陈东
Owner ZHEJIANG PROVINCE INST OF ARCHITECTURAL DESIGN & RES
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